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Online since: February 2018
Authors: Di Wu, Xin Hua Yang, Xin Yu Ye, Fan Liu, Jian Wen Zhao, Fan Yang
Co-Precipitation Synthesis and Photoluminescence Properties of Sc0.88Lu0.05(V1-xPx)O4:Eu3+0.07 Red Phosphor for White Light Emitting Diodes Di Wu1,3,a, Xin-Yu Ye1,2, Xin-Hua Yang1,3, Fan Liu1,2, Jian-Wen Zhao1,3, Fan Yang4 1National Engineering Research Center for Ionic Rare Earth, Ganzhou 341000, China 2School of Metallurgy and Chemistry Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China 3Ganzhou Nonferrous Metallurgy Research Institute, Ganzhou 341000, China 4Institut National de la Recherche Scientifique - Énergie, Matériaux et Télécommunications, Université du Québec, 1650 Boul.
Vanadate has good thermal stability and well-defined crystal, is an excellent matrix materials which can effectively absorb ultraviolet radiation and transfer to the rare earth ions, therefore, this kind of phosphor generally has high efficiency [6, 7].
Materials Research Bulletin, 43(2008) 907-911
Han, Materials Research Bulletin, 48 (2013) 512-520
Material Research Bulletin, 37(2002) 1531-1538
Online since: February 2014
Authors: Bo Lei, Wei Ren, Guo Qiang Chen, Ying Zhao Lv
Analysis Methods of Reasonable Finished State of Space-Twisting Cable Leaning Tower Cable-Stayed Bridge Yingzhao Lv1,a,Guoqiang Chen 1, b,Bo Lei2, c,andWei Ren3,d 1 Highway Administration of Hangzhou, Hangzhou 310004, China 2Zhejiang Provincial Institute of Communication Planning, Design&Research, Hangzhou 310006, China 3 Key Laboratory of Bridge Detection Reinforcement Technology Ministry of Communications, PRC,Xi’an 710064, China alyz117@126.com, bchen13336086322@163.com, c12160498@qq.com,drw20062@163.com Keywords: Cable-stayed Bridge; Reasonable Finished Bridge State; Reasonable Construction State; Coupling Analysis; Structural analysis Abstract:Aimed to solve the problem that the reasonable finished state (RFS) of space-twisting cable leaning tower cable-stayed bridge (SLCSB) is inconsistence with actual finished state.
For stayed cable, finished bridge cable force ofdead load should be greater than the minimum requirements of the cable sagand less than the maximum cable force allowed by the material; cable force is generally distributed as uniform as possible.
With the theoretical value the final setting value should be corrected in real-time in accordance with the selected construction control method, the feedback of field measurement values and the actual situation of engineering.The calculation flow is shown in Fig 1.
Because of the discrete characteristic of the concrete material, although the value is within the scope, it is close to the upper limitation and the possibility of cracking is great.
Response analysis of cable-stayed bridges due to random deviation of stay cable tension [J]. structural engineer, 2011, 27(1): 154-160;(in chinese) [5] Yang Xiaosen. study on the key problems in the life cycle health monitoring of long span cable-stayed bridge [D].
Online since: August 2020
Authors: Ashraf Bakkar
Electrochemical Synthesis of Silicon and Gallium Arsenide Photovoltaic Thin Films: A Critical Review and a Novel Approach Ashraf Bakkar1,2* 1Metallurgical & Materials Engineering Department, Faculty of Petroleum & Mining Engineering, Suez University, Egypt 2Department of Environmental Engineering, College of Engineering at Al-Lith, Umm Al-Qura University, Corniche Road, Al-Lith City, Saudi Arabia *ashrafbakkar@yahoo.com Keywords: PV cells, Semiconductors, Electrodeposition, Ionic liquids.
At present there is concurrent research in all of the aforementioned thin film materials, see Fig.1.
Minerals, Metallurgy & Materials 16, 1 (2009) 101–107
Baker, Materials Science of Thin Films: Deposition and structure, 3rd edition, Academic Press, 2014
Mohamad, Synthesis of Zinc Oxide by Sol–Gel Method for Photoelectrochemical Cells, Springer Briefs in Materials, 2014
Online since: April 2016
Authors: Matej Capek, Ludovít Kolláth, Iveta Onderová
The main goal is to investigate whether it is possible to use the Vortec tube (VT) as a source of heat energy for the removal of the humidity of material in the drying process by means of the hot air generated by the tube.
University of Wisconsin-Madison, 1500 Engineering Drive, Madison, WI 53706, USA.
The Faculty of Mechanical Engineering, Shahrood University of Technology, Shahrood, Iran.
School of Mechanical Engineering, The University of Adelaide, South Australia 5005, Australia.
Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Ministry of Education and Key Laboratory of Heat Transfer and Energy Conversion of Beijing Municipality, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100022, China.
Online since: July 2011
Authors: M. Mascot, J.C. Carru, Didier Fasquelle
The optimized annealing conditions (950°C for 15 min) give the following results: εr = 780 and tgδ = 0.01 at 100 kHz, Pr = 13 µC/cm², Ec = 63 kV/cm and a tunability of 55%. 1 Introduction Piezoelectric actuators, infrared sensors, FeRAM usually contain lead based materials [1-2].
Among these materials, PbZrTiO3 (PZT) is the most used thanks to its superior piezoelectric performances.
Accordingly, it is now necessary to implement materials without prohibited substances.
[5] Alexandru H.V, Berbecaru C, Ioachim A,Banciu M.G, Toacsen M.I, Nedelcu L, Ghetu D, Stoica G, Materials Science and Engineering B118 (2005) 92-96
Zhu, Microelectronic Engineering 66 (2003) 738-744
Online since: May 2015
Authors: Andrzej Sioma
Context Transformations of Range Images Using Directional Data Back Fill Algorithm Andrzej Sioma1,a 1AGH University of Science and Technology, Faculty of Mechanical Engineering and Robotics, Al.
References [1] Bednarczyk J., Sioma A. (2011), “Application of a visual measurement technique to the assessment of electrodynamic stamping”, Solid State Phenomena ; Control engineering in materials processing, ISSN 1012-0394, vol.177, pp. 1–9, 20
Learn how to construct three-dimensional vision applications by reviewing the measurements procedures, Control Engineering USA, vol. 56, pp. 46-48
[8] Tytko A., Sioma A. (2011): “Evaluation of the operational parameters of ropes”, Solid State Phenomena, Control engineering in materials processing, ISSN 1012-0394, vol.177, pp. 125–134
[10] Sioma A.(2013): The rope wear analysis with the use of 3D vision system, Andrzej Sioma, Control Engineering USA; ISSN 0010-8049. — 2013 vol.60 No. 5 s. 48-49
Online since: June 2011
Authors: S. X. Xue, S.S. Feng, P. Y. Cai, Q T Li, H. B. Wang
Wang e Department of Physics and Electronic Engineering, Taizhou University, Taizhou, 318000, China ashuangxixue@126.com, bfss@tzc.edu.cn, ccpy@tzc.edu.cn, dlqt@tzc.edu.cn, ewhb@tzc.edu.cn Key words: Ni-Mn-Ga alloy; Ferromagnetic shape memory alloy; Martensitic transformation Abstract.
As a promising material which has potential applications in magnetic sensors and actuators, it is desirable for excellent mechanical properties.
Online since: November 2012
Authors: Xin Chen, Guo Qing Ding, Shao Wei Liu, Wu Liu
A Measuring Method of Flexible Bar based on Machine Vision Shaowei Liu1,a, Wu Liu1,b, Guoqing Ding1,c, Xin Chen1,d 1Department of Instrument Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, China 200240 aanry@sjtu.edu.cn, ballenlau@sjtu.edu.cn, cgqding@sjtu.edu.cn, dxchen.ie@sjtu.edu.cn Keywords: Flexible Bar, Machine Vision, Finite Element Analysis, Thickness, Bending Rigidity Abstract.
Introduction Flexible bar is the key part of the flexible accelerometer, and its properties will influence the precision and stability of the meter directly.
In the model, the settings of modeling are as following: the flexible bar’s diameter is 1.6 mm; its length is 19.2 mm; the thickness of thin neck is 20 mm, and the distances between the position of the minimum thickness and two endpoints are 10.8 mm and 8.4 mm; its material is beryllium bronze; its density is 8.3 g/cm3; its Young modulus is 133 GPa; its Poisson's ratio is 0.4.
Online since: February 2011
Authors: Hong Yun Fan
Many teachers put teaching contents, reference material, homework exercises on the Internet in order to convenient students' autonomous learning.
For the complex graphics, engineering and production process that some of the traditional teaching method is hard to show , using computer simulation technology and audio technology, make the teaching contents directly to students to make students more easy to understand and accept, reached the twice the result with half the effort.
The second is mathematics teaching content with the inherent logic of curriculum content system, the organization shall facilitate learners on the whole course of the system structure, and conform to the learner's cognitive law, in the difficult key points provide various forms study content and multi-level exercises and provide re-designed; Third, interactive, mathematics learners according to their own interest or the needs of the learning content (such as the example of the parameters, etc.) to modify or change the route of learning knowledge points; Fourth, the establishment of online virtual labs, make mathematics Distance Learners in the network implementer visual operations, make the pre-experimental work for the kind of learners of mathematics curriculum, while providing courses answering system, discussion system, the operating system.
Online since: December 2012
Authors: Dan Nan Jiang, Xin Jie Li, Yue Jun Zhang
The Self-decay Characteristics of Chlorine Dioxide in Water Xinjie Lia, Danan Jiangb, Yuejun Zhangc School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China alxjnust@163.com, bjdan001@163.com, czhyuejun@njust.edu.cn Keywords: chlorine dioxide; self-decay; kinetics; tap water treatment Abstract.
The ClO2 dosage is the key to ensure the treatment effect of these three stages.
Experimental Procedure Material. 0.01mol·L-1 NaOH solution, 0.01mol·L-1 hydrochloric acid, different phosphate buffer solutions of pH=4~9, and iodometric analysis reagents, etc.
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